Using the Sheet Enhancement Module to manage paper curl

The Xerox Nuvera EA Digital Production System (except for systems with an MFF) are equipped with a Sheet Enhancement Module (SEM) located to the right of the print engine. This module is designed to automatically remove upcurl or downcurl in stacked paper (an upwards or downwards bend) as it passes from the print engine through the SEM.

If you notice excessive upcurl or downcurl in the paper in the stacked output, adjust the Sheet Enhancement Module's setting at the DocuSP interface to achieve the amount of sheet flatness you need. By ensuring sheet flatness, the Sheet Enhancement Module can prevent problems, such as paper jams and skew, and improve print performance.

Note

NOTE: The Xerox Nuvera systems also include a manual Decurl Adjustment knob, or dial, located near the fuser in the print engine. However, it is recommended that you only use the Sheet Enhancement Module to remove curl and do not adjust the Decurler Knob. Make sure the Decurler Knob remains set at 2.

Use Automatic or Manual Mode

The amount of decurl applied to paper passing through the Sheet Enhancement Module is set at the DocuSP interface from the Printer menu.

DocuSP provides the option of operating the SEM in one of two modes:

 

What would cause paper to curl?

Note

NOTE: Storing or using paper under humid conditions may increase paper curl. See Handling and Storing Paper.
caution: possibility of damage to equipment if procedure not followed.

CAUTION!
Do not use any paper that is not suitable for the system. For details on accepted papers, see Supported Paper.

 

Sheet Enhancement Module

How to set the Auto Decurl Mode for simplex or duplex jobs

Typically you will only need to select the Auto Decurl Mode. The system will automatically calculate the amount of decurl to apply to your job. In this mode you can still use a slide bar to make further setting adjustments.

If you are in the process of running a job and want to switch from using Manual Mode to Auto Mode, you must first pause the job.

  1. Open the right door of the print engine and check that the Decurler Adjustment Knob located near Area 4 is set at 2. Close the door.
  2. From the menu bar, select [Printer: Adjust Decurler]. The Adjust Decurler window displays.

  3. Select the Auto Decurl Mode radio button. The system uses the NVM values and the paper properties to automatically calculate the amount of decurl to apply to the job.
  4. Check your stacker and verify that the amount of sheet flatness is acceptable.
  5. If you need to further adjust the calculated decurl setting, move the slide bar from -1 to - 3 to decrease and remove downcurl. Move the slide bar from 0 to +3 to decrease and remove upcurl. The value you select displays in the text field.
  6. To select the default decurler setting (0), select <Default>.
  7. Select <OK> to apply and save your setting. The amount of decurl is immediately applied to the paper passing through the Sheet Enhancement Module paper path.
  8. When the job runs, check your stacker. If the stacked paper is still curled and the slide bar settings are already at the highest or lowest setting, use Manual Decurl Mode.
  9. Before switching to Manual Decurl Mode, pause the job.
  10. In the Manual Decurl Mode area, move the slide bar to -5 to remove the downcurl. Move the slide bar to +5 to remove upcurl.

How to set the Manual Decurl Mode for simplex or duplex jobs

If you are in the process of running a job and want to switch from using Auto Mode to Manual Mode, you must first pause the job. To make further decurl adjustments in Manual Decurl Mode, follow these steps. Make sure the Decurler Knob in the print engine is still set to 2.

  1. From the menu bar, select [Printer: Adjust Decurler]. The Adjust Decurler window displays.

  2. Select the Manual Decurl Mode radio button. The system defaults to +3 to compensate for slight upcurl.
  3. Move the slide bar from -1 to -5 to decrease and remove downcurl. Move the slide bar from 0 to +5 to decrease and remove upcurl. The value you select displays in the text field.
  4. To select the default decurler setting (+3), select <Default>.
  5. Select <OK> to apply and save your setting. The amount of decurl is immediately applied to the paper passing through the Sheet Enhancement Module paper path.
  6. When the job runs, check your stacker. Continue to adjust the settings as needed. If this is a duplex job and the stacked paper is still experiencing upcurl with the slide bar settings for both Auto and Manual Mode already at the highest setting, use the Reduce Upcurl feature in the User Diagnostics window on DocuSP.
  7. For a duplex job only, access user diagnostics and select [System: User Diagnostics].
  8. Select [System: System Optimization Customer Setting].
  9. Enable [Reduce Upcurl for 2-sided Jobs]. The system prints side 2 before side 1 thereby reducing curl in the stacker.
Note

NOTE: Do not use Reduce UpCurl if printing jobs with ordered stock or 3 hole punch stock. The system will ignore this setting and print side 1 first.